The SDL token performs three key functions:
SDL is a fee token — staking SDL will return a percentage of all fees generated by the platform. This fee scales directly with the amount of LINK and rewards in the protocol.
SDL is a governance token — voting will help shape the platform, determine future fees, and participant involvement.
SDL provides priority staking access — stakers of SDL will be the first to deposit LINK at stake.link.

SDL enables stake.link governance - SDL holders actively contribute to the platform by proposing, discussing, and refining SLURPs, electing Governing Council Members, and providing input on important decisions. It also facilitates reward distribution - it streamlines the allocation of rewards to platform participants. Stakers earn rewards for offering their collateral to Providers, while Providers receive incentives for making their staking allocations available.
SDL offers priority staking access too - By staking SDL, stakers can reserve their spot in the queue for guaranteed LINK staking allocations when additional space is offered